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For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
8.18897
Polyethylenglykol
20000 (stabilised) for synthesis
Synonym(e):
Poly(ethylenglykol), PEG
Größe auswählen
CHF 57.30
CHF 231.00
Über diesen Artikel
Fortfahren mit
Dampfdruck
<0.01 hPa ( 20 °C)
Qualitätsniveau
Form
flakes
Selbstzündungstemp.
>320 °C
Wirksamkeit
28000 mg/kg LD50, oral (Rat)
>20000 mg/kg LD50, skin (Rabbit)
Grünere Alternativprodukt-Eigenschaften
Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
pH-Wert
5-7 (20 °C, 100 g/L in H2O)
mp (Schmelzpunkt)
58-63 °C
Übergangstemp.
flash point 240 °C
Löslichkeit
500 g/L
Dichte
1.2 g/cm3 at 20 °C
Schüttdichte
400‑500 kg/m3
Grünere Alternativprodukt-Kategorie
Lagertemp.
2-30°C
SMILES String
C(CO)O
InChI
1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
InChIKey
LYCAIKOWRPUZTN-UHFFFAOYSA-N
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Dieser Artikel | 8.19015 | 8.07488 | 8.07490 |
|---|---|---|---|
| form flakes | form liquid | form liquid | form solid |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| storage temp. 2-30°C | storage temp. 2-30°C | storage temp. 2-30°C | storage temp. 2-30°C |
| density 1.2 g/cm3 at 20 °C | density 1.21 g/cm3 at 20 °C | density 1.2 g/cm3 at 20 °C | density 1.2 g/cm3 at 20 °C |
| mp 58-63 °C | mp 55-58 °C | mp 33-40 °C | mp 53-58 °C |
| vapor pressure <0.01 hPa ( 20 °C) | vapor pressure <0.1 hPa ( 20 °C) | vapor pressure <0.1 hPa ( 20 °C) | vapor pressure <0.01 hPa ( 20 °C) |
Allgemeine Beschreibung
Anwendung
It can also be used as:
- A surfactant in the synthesis of nanomaterials by various methods to control the size and morphology of nanostructure.[2][3]
- A support to prepare zero-valent iron-PEG nanocomposite material (Fe/PEG) applicable in the removal of Pb(II) from aqueous solutions.[4]
Hinweis zur Analyse
Schmelzbereich (oberer Wert): ≤ 66 °C
Hydroxylzahl: 4 - 7
Mittlere Molmasse: 16000 - 28000
Lagerklassenschlüssel
10 - Combustible liquids
WGK
WGK 1
Flammpunkt (°F)
281.5 °F - closed cup
Flammpunkt (°C)
138.6 °C - closed cup
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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